Bug 6063 - mythbackend segfaults
Summary: mythbackend segfaults
Status: RESOLVED DUPLICATE of bug 5716
Alias: None
Product: Mageia
Classification: Unclassified
Component: RPM Packages (show other bugs)
Version: 2
Hardware: i586 Linux
Priority: Normal normal
Target Milestone: ---
Assignee: Mageia Bug Squad
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Reported: 2012-05-24 01:15 CEST by Derek Jennings
Modified: 2012-06-04 17:44 CEST (History)
1 user (show)

See Also:
Source RPM: mythtv-0.25-20120418.3.mga2.src.rpm
CVE:
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Description Derek Jennings 2012-05-24 01:15:07 CEST 
Description of problem:
mythbackend  and mythtv-setup both segfault on Mageia2

# systemctl status mythbackend.service
mythbackend.service - MythTV backend service
          Loaded: loaded (/lib/systemd/system/mythbackend.service; enabled)
          Active: failed (Result: signal) since Wed, 23 May 2012 23:03:59 +0100; 2min 21s ago
         Process: 2167 ExecStart=/usr/bin/mythbackend --logpath /var/log/mythtv/ (code=killed, signal=SEGV)
          CGroup: name=systemd:/system/mythbackend.service

May 23 23:03:59 mail.localdomain mythbackend[2167]: 2012-05-23 23:03:59.245634 N  Setting Log Level to LOG_INFO
May 23 23:03:59 mail.localdomain mythbackend[2167]: 2012-05-23 23:03:59.245783 I  Added logging to the console
May 23 23:03:59 mail.localdomain mythbackend[2167]: 2012-05-23 23:03:59.245892 I  Added logging to /var/log/mythtv/mythbackend.20120...67.log
May 23 23:03:59 mail.localdomain mythbackend[2167]: 2012-05-23 23:03:59.245919 I  Added database logging to table logging
May 23 23:03:59 mail.localdomain mythbackend[2167]: 2012-05-23 23:03:59.246114 N  Setting up SIGHUP handler
May 23 23:03:59 mail.localdomain mythbackend[2167]: 2012-05-23 23:03:59.246533 N  Using runtime prefix = /usr
May 23 23:03:59 mail.localdomain mythbackend[2167]: 2012-05-23 23:03:59.246957 N  Read conf dir = @syscondir@/mythtv
May 23 23:03:59 mail.localdomain mythbackend[2167]: 2012-05-23 23:03:59.247014 N  Using configuration directory = @syscondir@/mythtv
May 23 23:03:59 mail.localdomain mythbackend[2167]: 2012-05-23 23:03:59.247343 I  Assumed character encoding: en_GB.UTF-8
May 23 23:03:59 mail.localdomain mythbackend[2167]: 2012-05-23 23:03:59.247734 E  Unable to read configuration file mysql.txt

Note it is trying to find the configuration file in @syscondir@/mythtv  No matter where I put the config files ( /var/lib/mythtv or /root) they are not found.
Comment 1 Derek Jennings 2012-05-24 02:15:32 CEST 
I managed to get mythbackend to read the config  files by editing /lib/systemd/system/mythbackend.service

[Service]
Type=simple
Environment=MYTHCONFDIR=/var/lib/mythtv


But it still segfaults :-(
Comment 2 Derek Jennings 2012-05-24 17:21:12 CEST 
Today I tried mythbackend out in an x86_64 Virtualbox and it worked OK.
Then tried with i586 mythtv packages in an x86_64 Virtualbox and it seg faulted.

The myth server I originally had the problem with was a clean i586 installation.
I reinstalled the server as x86_64 and now mythbackend works without seg faulting and without having to edit anything to make it read the correct configuration file.

I shall try again in a fresh i586 virtual box just in case it is an i586 specific issue.

Hardware: x86_64 => i586

Comment 3 Derek Jennings 2012-05-31 22:13:34 CEST 
Tried mythbackend and myth-setup on a clean install i586 in a vbox.

Initialised database with
mysql -u root -p < /usr/share/mythtv/initialdb/mc.sql

# urpmi mythtv-setup
Package mythtv-setup-0.25-20120418.3.mga2.tainted.i586 is already installed
[root@mageia2 mythtv]# mythtv-setup
2012-05-31 21:09:31.199912 C  mythtv-setup version:  [0.25-20120418.3.mga2.tainted] www.mythtv.org
2012-05-31 21:09:31.199937 N  Enabled verbose msgs:  general
2012-05-31 21:09:31.199960 N  Setting Log Level to LOG_INFO
2012-05-31 21:09:31.199996 I  Added logging to the console
2012-05-31 21:09:31.200006 I  Added database logging to table logging
2012-05-31 21:09:31.200110 N  Setting up SIGHUP handler
2012-05-31 21:09:31.200182 N  Using runtime prefix = /usr
2012-05-31 21:09:31.200195 N  Using configuration directory = /root/.mythtv
2012-05-31 21:09:31.200311 I  Assumed character encoding: en_GB.UTF-8
2012-05-31 21:09:31.200674 E  Unable to read configuration file mysql.txt
2012-05-31 21:09:31.200816 N  Empty LocalHostName.
2012-05-31 21:09:31.200821 I  Using localhost value of mageia2.localdomain
cannot find libcec.solibcec.so: cannot open shared object file: No such file or directory
Segmentation fault

# mythbackend --user=mythtv
2012-05-31 21:10:10.248936 C  mythbackend version:  [0.25-20120418.3.mga2.tainted] www.mythtv.org
2012-05-31 21:10:10.248963 N  Enabled verbose msgs:  general
2012-05-31 21:10:10.248989 N  Setting Log Level to LOG_INFO
2012-05-31 21:10:10.249028 I  Added logging to the console
2012-05-31 21:10:10.249034 I  Added database logging to table logging
2012-05-31 21:10:10.249139 N  Setting up SIGHUP handler
2012-05-31 21:10:10.249207 N  Using runtime prefix = /usr
2012-05-31 21:10:10.249220 N  Using configuration directory = /var/lib/mythtv/.mythtv
2012-05-31 21:10:10.249327 I  Assumed character encoding: en_GB.UTF-8
2012-05-31 21:10:10.266123 E  Unable to read configuration file mysql.txt
2012-05-31 21:10:10.266345 N  Empty LocalHostName.
2012-05-31 21:10:10.266352 I  Using localhost value of mageia2.localdomain
2012-05-31 21:10:10.282527 N  Setting QT default locale to en_GB
2012-05-31 21:10:10.282555 I  Current locale en_GB
2012-05-31 21:10:10.282609 N  Reading locale defaults from /usr/share/mythtv//locales/en_gb.xml
2012-05-31 21:10:10.282901 E  SaveSettingOnHost('FreqTable') - No database yet
2012-05-31 21:10:10.282909 E  SaveSettingOnHost('ISO639Language0') - No database yet
2012-05-31 21:10:10.282914 E  SaveSettingOnHost('ISO639Language1') - No database yet
2012-05-31 21:10:10.282918 E  SaveSettingOnHost('TVFormat') - No database yet
2012-05-31 21:10:10.282923 E  SaveSettingOnHost('VbiFormat') - No database yet
2012-05-31 21:10:10.282928 E  SaveSettingOnHost('prefDupMethod') - No database yet
2012-05-31 21:10:10.282936 E  SaveSettingOnHost('Country') - No database yet
2012-05-31 21:10:10.282939 E  SaveSettingOnHost('DateFormat') - No database yet
2012-05-31 21:10:10.282939 E  SaveSettingOnHost('EnableMHEG') - No database yet
2012-05-31 21:10:10.282939 E  SaveSettingOnHost('Language') - No database yet
2012-05-31 21:10:10.282939 E  SaveSettingOnHost('MythArchiveVideoFormat') - No database yet
2012-05-31 21:10:10.282939 E  SaveSettingOnHost('ShortDateFormat') - No database yet
2012-05-31 21:10:10.282940 E  SaveSettingOnHost('TimeFormat') - No database yet
2012-05-31 21:10:10.284132 E  Error preparing query: SELECT data FROM settings WHERE value = :VALUE AND hostname = :HOSTNAME
2012-05-31 21:10:10.284152 E  Driver error was [2/1146]:
QMYSQL3: Unable to prepare statement
Database error was:
Table 'mythconverg.settings' doesn't exist

2012-05-31 21:10:10.284598 E  Error preparing query: SELECT data FROM settings WHERE value = :VALUE AND hostname = :HOSTNAME
2012-05-31 21:10:10.284610 E  Driver error was [2/1146]:
QMYSQL3: Unable to prepare statement
Database error was:
Table 'mythconverg.settings' doesn't exist

2012-05-31 21:10:10.284787 I  No current database version?
2012-05-31 21:10:10.285643 I  Database appears to be empty/new!
2012-05-31 21:10:10.285682 C  MythTV database schema is old. Waiting to see if DB is being upgraded.
Segmentation fault



So far the only environment where mythtv has worked for me is x86_64 in both vbox and real hardware.
Comment 4 Derek Jennings 2012-06-04 17:44:30 CEST 
Colin I think this is probably a duplicate of Bug 5716 so marking as RESOLVED DUPLICATE

I just tried mythtv-backend-0.25-20120602.0.1.mga2 and both mythbackend and mythtv-setop no longer segfault on i586

*** This bug has been marked as a duplicate of bug 5716 ***

CC: (none) => mageia
Status: NEW => RESOLVED
Resolution: (none) => DUPLICATE
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